[FLASH-USERS] question about radslab

[Hansen, Eddie]

Hi Youssef,

The BC for RadSlab is not spatially-varying; it is just a single radiation temperature along the entire Yl boundary (the “dirichlet” boundary). There are runtime parameters that control the value of that temperature and some time-dependence, which are used in Simulation_adjustEvolution.

If you have a specific intensity in mind, then you’d have to calculate what temperature that would be (e.g., I ~ T^4 for a blackbody).

--
Eddie Hansen
Applications Group Leader
Flash Center for Computational Science


From: flash-users <flash-users-bounces at flash.rochester.edu> on behalf of Youssef Abouhussien <abouhussieny at vcu.edu>
Date: Saturday, January 4, 2025 at 4:31 PM
To: flash-users at flash.rochester.edu <flash-users at flash.rochester.edu>
Subject: [FLASH-USERS] question about radslab
Hi flash users,

In RadSlab example for X-rays ablation, how can you specify the intensity? usually for blackbody source it's specified by the radiation temperature (cant change that for radiation transport purposes) and distance from target (for a point source) .

Also i cant tell where the location of the source or shape (planar, point etc ) .

thanks.

Regards,
Youssef


------------------------------------------------------------------------------------------------------
Youssef Abouhussien
Research Assistant
Doctoral Student
Virginia Commonwealth University
Dept. of Mechanical and Nuclear Engineering
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